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Icelandic tephrochronology - matching the provenance of proximal and distal volcanic glasses using La-ICPMS trace element data

Abstract : Thorarinsson (1944) pioneered the use of tephrochronology and its application in NW Europe. The basis of this chronological tool is the use of time-parallel marker tephra (i.e., ash <2mm) horizons to correlate proximal volcanic deposits with distal tephras found in marine-lacustrine-ice cores and terrestrial sequences. The trace element geochemistry of volcanic glasses [determined by LA-ICPMS] offers an improved diagnostic tool for matching the juvenile components of proximal and distal tephras and has considerable potential for assigning provenance to cryptotephras (<100 microns) provided they are of sufficient size and thickness.
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Submitted on : Friday, May 7, 2010 - 7:43:33 PM
Last modification on : Thursday, July 2, 2020 - 8:38:02 PM
Long-term archiving on: : Thursday, September 16, 2010 - 2:01:43 PM

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Martin Menzies, E. Tomlinson, Wolfgang Muller, T. Thordarson, Christine Lane, et al.. Icelandic tephrochronology - matching the provenance of proximal and distal volcanic glasses using La-ICPMS trace element data. Iceland in the Central Northern Atlantic : hotspot, sea currents and climate change, May 2010, Plouzané, France. ⟨hal-00482055⟩

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